What are the cheapest airlines to fly from Illinois to Japan one-way?

One-way options have recently been found by users for as low as $363 on Japan Airlines. Other airlines that offer cheap prices include ANA from $369 and United Airlines from $372 one-way.

How far in advance should I book a flight from Illinois to Japan?

Users have found that booking a flight from Illinois to Japan at least 24 days early can save you up to 4% on average compared to booking a flight this week. If booking 24 days before your flight isn’t an option for you, users have found flights from Illinois to Japan for as little as $1,145 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,145 for flights departing within the next 3 days.

What is the cheapest month to fly from Illinois to Japan?

September can be a great time to fly to Japan from Illinois with a flight ticket averaging about $1,417. Cheapflights users have found deals in the month of September for as cheap as $819. The most expensive prices can be found in the month of December.

Can I find deals for flights from Illinois to Japan that include hotel bookings?

Yes. In addition to deals on Illinois to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Illinois to Japan?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Japan.

Can I find deals for business class flights from Illinois to Japan?

Yes. Cheapflights offers flight deals from Illinois to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$835+ Flights from Illinois to Japan

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheap flight deals from Illinois to Japan

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$841 (Air Canada)
One-way from	$363 (FlightHub)
Popular in	December
Cheapest in	September
Average price	$1,349
Good round-trip deal	$976 or less
Good one-way deal	$541 or less

Provider with most accurate pricing for Chicago (CHI)-Tokyo (TYO) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Chicago (CHI)-Tokyo (TYO) flights.

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From Illinois to Japan

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One-way flight from Illinois to Japan

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($82 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Illinois to Japan.

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Price to beat on a one-way flight from Illinois to Japan.

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Find flight deals from Illinois to Japan

Cheapest flights from Illinois to Japan
Explore the most affordable flight options available from Illinois to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

Sun 9/215:30 pmSTL - NRT

2 stops31h 20mAir Canada

Fri 9/265:35 pmNRT - STL

2 stops32h 45mAir Canada

Deal found 4/1

$841

Tue 4/295:54 pmSTL - HND

1 stop21h 06mUnited Airlines

Tue 5/65:45 pmHND - STL

1 stop20h 01mUnited Airlines

Deal found 4/1

$843

Tue 4/296:15 amSTL - NRT

1 stop17h 45mANA

Tue 5/65:00 pmNRT - STL

1 stop36h 49mANA

Deal found 3/31

$845

Sun 4/66:30 amSTL - NRT

2 stops18h 15mUnited Airlines

Wed 4/165:00 pmNRT - STL

2 stops33h 20mUnited Airlines

Deal found 4/1

$849

Thu 9/45:30 pmSTL - HND

2 stops32h 20mAir Canada

Thu 9/116:10 pmHND - STL

1 stop35h 06mAir Canada

Deal found 4/2

$850

Tue 9/28:20 amSTL - HND

1 stop17h 05mANA

Tue 9/235:15 pmHND - STL

1 stop16h 12mANA

Deal found 4/1

$855

Mon 12/87:20 amSTL - HND

2 stops19h 25mDelta

Sat 12/205:35 pmHND - STL

1 stop19h 26mDelta

Deal found 4/1

$869

Fri 10/247:00 amSTL - NRT

1 stop19h 00mAlaska Airlines

Mon 11/176:25 pmNRT - STL

1 stop20h 31mAlaska Airlines

Deal found 4/1

$878

Tue 9/164:00 pmORD - KIX

1 stop24h 40mCathay Pacific

Wed 9/244:20 pmKIX - ORD

2 stops36h 05mCathay Pacific

Deal found 4/1

$887

Sun 5/181:00 pmORD - NRT

1 stop35h 20mMultiple Airlines

Tue 6/33:50 pmNRT - ORD

2 stops38h 54mMultiple Airlines

Deal found 4/2

$917

Mon 11/242:40 pmORD - NRT

1 stop33h 40mCathay Pacific

Tue 12/29:30 pmNRT - ORD

1 stop30h 30mCathay Pacific

Deal found 4/3

$919

Mon 4/74:00 pmORD - HND

1 stop31h 55mCathay Pacific

Mon 4/144:20 pmHND - ORD

1 stop36h 05mCathay Pacific

Deal found 4/2

$921

Best flights from Illinois to Japan
Discover carefully curated flight deals from Illinois to Japan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 3, 2025.

Sun 9/215:30 pmSTL - NRT

2 stops31h 20mAir Canada

Fri 9/265:35 pmNRT - STL

2 stops32h 45mAir Canada

Deal found 4/1

$841

Tue 4/295:54 pmSTL - HND

1 stop21h 06mUnited Airlines

Tue 5/65:45 pmHND - STL

1 stop20h 01mUnited Airlines

Deal found 4/1

$843

Tue 4/296:15 amSTL - NRT

1 stop17h 45mANA

Tue 5/65:00 pmNRT - STL

1 stop36h 49mANA

Deal found 3/31

$845

Mon 9/84:00 pmORD - KIX

1 stop24h 40mCathay Pacific

Tue 9/164:20 pmKIX - ORD

2 stops36h 05mCathay Pacific

Deal found 4/2

$887

Fri 9/267:00 amSTL - HND

1 stop17h 20mAmerican Airlines

Fri 10/37:45 pmHND - STL

1 stop17h 14mAmerican Airlines

Deal found 4/1

$901

Sun 5/181:00 pmORD - NRT

1 stop35h 20mMultiple Airlines

Tue 6/33:50 pmNRT - ORD

2 stops38h 54mMultiple Airlines

Deal found 4/2

$917

Mon 9/17:05 pmSTL - HND

2 stops28h 00mDelta

Wed 9/104:20 pmHND - STL

2 stops21h 19mDelta

Deal found 4/1

$943

Sun 4/207:04 amSTL - NRT

1 stop17h 56mJapan Airlines

Wed 4/302:10 pmNRT - STL

2 stops23h 06mJapan Airlines

Deal found 4/1

$1,006

Tue 4/2212:30 amORD - NRT

1 stop22h 55mEVA Air

Wed 5/71:25 pmNRT - ORD

1 stop21h 35mEVA Air

Deal found 4/2

$1,090

Sat 9/1311:45 pmORD - KIX

1 stop29h 15mTurkish Airlines

Thu 9/2510:25 pmKIX - ORD

1 stop25h 15mTurkish Airlines

Deal found 4/2

$1,100

Tue 9/28:55 amSTL - HND

2 stops23h 55mKorean Air

Mon 9/222:00 amHND - STL

2 stops35h 02mKorean Air

Deal found 4/1

$1,124

Wed 6/119:30 pmORD - KIX

1 stop25h 05mFinnair

Wed 6/1810:25 pmKIX - ORD

1 stop33h 25mFinnair

Deal found 4/2

$1,329

Last-minute flights from Illinois to Japan
Discover last-minute flight deals from Illinois to Japan. Data last updated April 3, 2025 and is based on user searches.

Wed 4/24:00 pmORD - NRT

1 stop32h 30mCathay Pacific

Mon 4/149:40 pmNRT - ORD

1 stop30h 45mCathay Pacific

Deal found 4/2

$919

Sun 4/66:30 amSTL - NRT

2 stops18h 15mUnited Airlines

Wed 4/165:00 pmNRT - STL

2 stops33h 20mUnited Airlines

Deal found 4/1

$849

Mon 4/78:00 amSTL - HND

2 stops31h 00mUnited Airlines

Thu 4/179:15 pmHND - STL

2 stops31h 27mUnited Airlines

Deal found 4/1

$848

Mon 4/76:15 amSTL - NRT

1 stop17h 45mUnited Airlines

Thu 4/175:00 pmNRT - STL

2 stops32h 03mUnited Airlines

Deal found 4/1

$849

Mon 4/76:15 amSTL - NRT

1 stop17h 45mANA

Wed 4/165:00 pmNRT - STL

1 stop33h 20mANA

Deal found 4/2

$994

Mon 4/79:09 pmMDW - NRT

2 stops50h 46mMultiple Airlines

Mon 4/1410:05 amNRT - MDW

1 stop16h 05mMultiple Airlines

Deal found 3/31

$996

Mon 4/77:04 amSTL - HND

1 stop18h 51mJapan Airlines

Thu 4/1712:55 pmHND - STL

2 stops24h 21mJapan Airlines

Deal found 4/1

$1,001

Mon 4/77:04 amSTL - NRT

1 stop17h 56mJapan Airlines

Thu 4/177:25 amNRT - STL

2 stops29h 51mJapan Airlines

Deal found 4/2

$1,064

Mon 4/77:04 amSTL - HND

1 stop18h 51mAmerican Airlines

Thu 4/1711:55 amHND - STL

1 stop25h 21mAmerican Airlines

Deal found 4/1

$1,172

Mon 4/74:00 pmORD - HND

1 stop31h 55mCathay Pacific

Mon 4/144:20 pmHND - ORD

1 stop36h 05mCathay Pacific

Deal found 4/2

$921

Tue 4/84:00 pmORD - HND

1 stop31h 55mCathay Pacific

Tue 4/154:20 pmHND - ORD

1 stop36h 05mCathay Pacific

Deal found 4/2

$929

Tue 4/84:00 pmORD - NRT

2 stops35h 15mCathay Pacific

Tue 4/159:40 pmNRT - ORD

1 stop30h 45mCathay Pacific

Deal found 4/2

$935

One-way flights from Illinois to Japan
Search for one-way flight options from Illinois to Japan. Find affordable one-way fares based on user searches. Data last updated April 3, 2025.

Sun 8/248:26 amSTL - NRT

1 stop16h 49mJapan Airlines

Deal found 3/31

$363

Sun 8/249:17 amSTL - HND

1 stop21h 58mANA

Deal found 3/31

$369

Sun 8/248:20 amSTL - HND

2 stops30h 10mUnited Airlines

Deal found 3/31

$372

Sun 8/244:32 pmSTL - NRT

2 stops31h 58mUnited Airlines

Deal found 3/31

$372

Thu 5/16:00 amSTL - HND

1 stop17h 05mDelta

Deal found 4/2

$449

Sun 4/204:55 pmORD - KIX

2 stops51h 10mMultiple Airlines

Deal found 4/1

$450

Tue 4/223:30 pmSTL - HND

1 stop34h 20mAir Canada

Deal found 4/1

$480

Tue 4/225:35 pmSTL - NRT

2 stops31h 50mAir Canada

Deal found 4/1

$489

Mon 6/210:31 amSTL - HND

1 stop27h 49mJapan Airlines

Deal found 4/2

$497

Thu 7/106:30 amSTL - NRT

2 stops24h 35mDelta

Deal found 4/1

$525

Mon 4/74:00 pmORD - NRT

1 stop24h 40mCathay Pacific

Deal found 4/2

$535

Tue 4/224:00 pmORD - HND

1 stop31h 55mCathay Pacific

Deal found 4/2

$538

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Japan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Sun 9/21

5:30 pm-2:50 pm

2 stops31h 20m

Tokyo Narita

Fri 9/26

5:35 pm-12:20 pm

2 stops32h 45m

$841

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 4/29

5:54 pm-5:00 am

1 stop21h 06m

Tokyo Haneda

Tue 5/6

5:45 pm-11:46 pm

1 stop20h 01m

$843

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 4/29

6:15 am-2:00 pm

1 stop17h 45m

Tokyo Narita

Tue 5/6

5:00 pm-3:49 pm

1 stop36h 49m

$845

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Thu 9/4

5:30 pm-3:50 pm

2 stops32h 20m

Tokyo Haneda

Thu 9/11

6:10 pm-3:16 pm

1 stop35h 06m

$850

St. LouisTokyo

STL - NRT

STLNRT

Lambert-St Louis

Tue 4/29

4:20 pm-2:00 pm

1 stop31h 40m

Tokyo Narita

Tue 5/6

5:00 pm-8:32 pm

1 stop17h 32m

$851

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Tue 9/2

8:20 am-3:25 pm

1 stop17h 05m

Tokyo Haneda

Tue 9/23

5:15 pm-7:27 pm

1 stop16h 12m

$855

St. LouisTokyo

STL - HND

STLHND

Lambert-St Louis

Fri 9/26

7:00 am-2:20 pm

1 stop17h 20m

Tokyo Haneda

Fri 10/3

7:45 pm-10:59 pm

1 stop17h 14m

$901

ChicagoTokyo

ORD - NRT

ORDNRT

Chicago O'Hare Intl

Sun 5/18

1:00 pm-2:20 pm

1 stop35h 20m

Tokyo Narita

Tue 6/3

3:50 pm-4:44 pm

2 stops38h 54m

$917

ChicagoTokyo

ORD - NRT

ORDNRT

Chicago O'Hare Intl

Tue 4/15

4:00 pm-6:40 am

1 stop24h 40m

Tokyo Narita

Tue 4/22

9:40 pm-2:25 pm

1 stop30h 45m

$921

ChicagoTokyo

ORD - HND

ORDHND

Chicago O'Hare Intl

Mon 4/7

4:00 pm-1:55 pm

1 stop31h 55m

Tokyo Haneda

Mon 4/14

4:20 pm-2:25 pm

1 stop36h 05m

$921

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 60 results

...

Best time to book a flight from Illinois to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from Illinois with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Japan

What is the cheapest month to book a flight from Illinois to Japan?

Currently, February is the cheapest month in which you can book a flight from Illinois to Japan (average of $866). Flying from Illinois to Japan in December is currently the most expensive (average of $1,670). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to JP?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Japan as you normally would.

Rainfall in Japan by month

In terms of precipitation, rainfall in Japan ranges from 2.0 - 8.3 inches per month. September is typically the wettest month, when rainfall can reach 8.3 in. January is typically the driest time to visit Japan when rainfall is around 2.0 in.

Temperature in Japan by month

If weather is an important factor for your trip to Japan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Japan

Get a feel of what it's like to fly with EVA Air, Korean Air and Japan Airlines from Illinois to Japan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very good

1,170 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

EVA Air

8.4

Very good

1,170 reviews

EVA Air

8.4

Very good

1,170 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Korean Air

8.4

Very good

1,052 reviews

EVA Air

8.4

Very good

1,170 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Japan Airlines

8.3

Very good

1,441 reviews

EVA Air

8.4

Very good

1,170 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

ANA

8.3

Very good

830 reviews

EVA Air

8.4

Very good

1,170 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Asiana Airlines

8.2

Very good

438 reviews

EVA Air

8.4

Very good

1,170 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Related info for your journey

What are the cheapest airlines to fly from Illinois to Japan one-way?
One-way options have recently been found by users for as low as $363 on Japan Airlines. Other airlines that offer cheap prices include ANA from $369 and United Airlines from $372 one-way.
Can I find deals for flights from Illinois to Japan that include hotel bookings?
Yes. In addition to deals on Illinois to Japan flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Japan?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Japan.
Can I find deals for business class flights from Illinois to Japan?
Yes. Cheapflights offers flight deals from Illinois to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Illinois to Japan?
Currently, February is the cheapest month in which you can book a flight from Illinois to Japan (average of $866). Flying from Illinois to Japan in December is currently the most expensive (average of $1,670). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 9 airlines flying from Illinois to Japan

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$143	Average$1,514	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$757	Average$1,517	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$822	Average$1,365	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$830	Average$1,055	FlexibilityNo cancel fee	On-time67%
Cathay Pacific	Cheapest$858	Average$976	FlexibilityNo cancel fee	On-time72%
Hawaiian Airlines	Cheapest$880	Average$891	FlexibilityNo cancel fee	On-time85%
EVA Air	Cheapest$918	Average$1,183	FlexibilityNo cancel fee	On-time74%
ANA	Cheapest$983	Average$1,643	FlexibilityNo cancel fee	On-time80%
Japan Airlines	Cheapest$1,318	Average$1,623	FlexibilityNo cancel fee	On-time79%

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$363+ Cheap flights from Illinois to Japan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Japan with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Illinois to Japan

Keep the following information in mind while searching for Illinois to Japan flight deals. Data was last updated April 3, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Japan

Cheapest flights from Illinois to JapanExplore the most affordable flight options available from Illinois to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

Explore the most affordable flight options available from Illinois to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Japan that are best for you.

Best time to book a flight from Illinois to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from Illinois with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Japan

What is the cheapest month to book a flight from Illinois to Japan?

What is the cheapest time of day to fly from IL to JP?

Find hourly flight availability from Illinois to Japan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 3, 2025.

Rainfall in Japan by month

Plan your trip to Japan by taking into account the average rainfall totals by month.

Temperature in Japan by month

Plan your trip to Japan by taking into account the average temperature totals by month.

Reviews of airlines servicing Japan

Get insights into the airlines that provide service to Japan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Japan. Reviews last updated April 3, 2025.

Get a feel of what it's like to fly with EVA Air, Korean Air and Japan Airlines from Illinois to Japan by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Japan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines to fly from Illinois to Japan one-way?

Can I find deals for flights from Illinois to Japan that include hotel bookings?

How can I find direct flights from Illinois to Japan?

Can I find deals for business class flights from Illinois to Japan?

What is the cheapest month to book a flight from Illinois to Japan?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Japan

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Illinois to Japan

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Cheapest flights from Illinois to Japan
Explore the most affordable flight options available from Illinois to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.